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方形染料表现出自发的光闪,使活细胞纳米镜成为可能
Bingjie Zhao1, Daoming Guan1, Jinyang Liu1
1Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200438, China.
Nano letters
|April 8, 2024
概括
缺乏电子的方形染料现在适合用于生物成像. 研究人员发现它们的漂白是可逆的,并开发了一种用于活细胞超分辨率显微镜的新型深红色探针.
科学领域:
- 化学生物学 化学生物学
- 生物光子学 生物光子学
- 分子成像学分子成像学
背景情况:
- 缺电子方形染料对核友性攻击和化学漂白具有敏感性,限制了它们在生物成像中的使用.
- 之前的研究认为,方染料的漂白是不可逆转的,这阻碍了它们在活细胞研究中的应用.
研究的目的:
- 在水性环境中研究缺乏电子的正方形染料的漂白机制.
- 开发一种新的深红色方形探针,用于活细胞超分辨率成像.
- 在生理条件下展示探测器在单分子定位显微镜 (SMLM) 的能力.
主要方法:
- 斯克瓦林染料漂白作为可逆自发火过程的特征.
- 一个新的深红色正方形探针的设计和合成.
- 探针在活细胞单分子定位显微镜 (SMLM) 中的应用.
- 探针性能与基准染料 (如Cy5和Si-rhodamine) 的比较.
主要成果:
- 在水性环境中使用色剂漂白是一种可逆的过程,而不是不可逆的.
- 这种新型深红色方色探头可以在生理条件下实现SMLM,而无需有害的添加剂或强烈的激光.
- 探测器表现出由生物核 (例如,谷,氧化) 调节的自发闪.
- 方形探针显示出明显更高的排放率和比Cy5和Si-rhodamine更好的性能.
结论:
- 斯克瓦莱因染料可以有效地用于先进的生物成像,克服以前的局限性.
- 开发的方形探头是高分辨率活细胞成像的有希望的工具,揭示了复杂的细胞结构.
- 这项工作为在下一代超高分辨率显微镜应用中使用正方形染料开辟了新的途径.
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